You can blur parts of your 360 photos to hide details such as faces or license plates. If there are people or information that you don’t have permission to show in your photo, we recommend you blur these elements to respect others’ privacy.
Blur or remove 360 photos with the Street View app – Computer – Google Maps Help
I had no idea this was possible, though it makes sense.
I discovered this because some other McNultys seem to think my email address belongs to them and use it for all sorts of things. Someone who lives in this blurry house:
Just got a brand new mattress delivered to their very blurry front door!
To do the same thing with Apple Maps you need to email MapsImageCollection@apple.com, according to this document.